# class Person:
#     city = "北京"
#
#     def __init__(self, name):
#         self.name = name
#
#
# p1 = Person("zhangyizhuo")
# print(Person.city)  # 打印类变量
# print(p1.name)  # 打印实例变量
# print(p1.city)  # 打印类变量


# class A:
#     pass
#
# class B:
#     pass
#
# class C(A, B, object):
#     pass
#
# print(C.__mro__)  # 输出：(<class '__main__.C'>, <class '__main__.A'>, <class '__main__.B'>, <class 'object'>)


# print(3 / 5)



